Air Quality Data provided by UK-AIR, air quality information resource - Defra, UK (uk-air.defra.gov.uk) and London Air Quality Network - Environmental Research Group, King's College London (londonair.org.uk)

Historical Air Quality

Detailed Air Quality Data

Most Recent News

October 8th 2016: Registration is open for the November 7th CCA Coalition webinar on Air Quality, Climate Change and the New Urban Agenda: Taking Action at the City Level (Part 2). Register for free now on ccacoalition.org

June 20th 2015: We apologize for the service break which happened during June 19th ~ 20th. The problem is now fixed, and service back to normal. We have received tons of support emails (thanks!), but might not be able to reply to all of them individually.

June 22nd 2013:Singapore PM2.5 based AQI is now updated on a hourly basis. Thanks to Singapore National Environment Agency for making this happen.If you wonder why PM2.5 AQI is so relevant compared to PM10 (since PSI is only using PM10 data), please check the article about why is PM2.5 often higher than PM10.

May 20th 2013:Shenyang (沈阳) Air Quality information is now based on 3 stations. More information available in the faq.

May 11th 2013: The city geo-location system (i.e. city position on the map) has been updated to take into account a growing number of cities.In case you notice any issue with the geo-location, such as any city wrongly located on the map, please inform us.

May 6th 2013: The Air Quality data information for Japan is progressively going back to normal. If you notice any issue, please contact us.

In case you can not access the Firefox store, you can also download the ".xpi" add-on
from this link.

In order to install the City of London - Farringdon Street Air Quality Widget on your favorite iPhone or iPod device,
just launch the internet browser from your device and open the web page:
"
http://ios.aqicn.org/?7949".

Or just scan this QR-code:

Then click on this icon to install the widget as an application
directly accessible from your iPhone homescreen.

You can download the City of London - Farringdon Street Air Quality Widget for your favorite Windows Mobile 8 or 8.1,
directly from the Microsoft application store:

In order to install the City of London - Farringdon Street Air Quality Widget on your favorite Symbian device,
just download the "City of London - Farringdon StreetAir.wgz" and install on your phone using Nokia Suite.

In order to install the City of London - Farringdon Street Air Quality Widget on your Windows Desktop,
just download the "City of London - Farringdon Street.gadget" and let you be guided through the Windows installer.

Usage Notice: All the Air Quality data are unvalidated at the time of publication, and due to quality assurance these data may be amended, without notice, at any time. The World Air Quality Index project has exercised all reasonable skill and care in compiling the contents of this information and under no circumstances will the World Air Quality Index project team or its agents be liable in contract, tort or otherwise for any loss, injury or damage arising directly or indirectly from the supply of this data.